**3. Designing a "digicircular" future**

It is clear that digitization can be an opportunity to accelerate the sustainability processes connected to digitalization. The point now is to understand how to move from a qualitative to a quantitative approach [21]. The problem is not entirely secondary, it is indeed extremely important. In fact, many organizations and companies struggle to understand what is circular from what is not. A paradigm shift is needed. A new mindset to redesign the model for the future, adopting the circular economy model on a national and international scale. From this perspective, digital technologies represent an opportunity to identify new business models [22]. The combination of technologies helps to evolve businesses into a virtuous circle of improvement. At the same time, digital technologies help not to "make mistakes". Just think of the potential of digital twins that allow us to simulate real systems in virtual environments by comparing multiple scenarios, optimizing resources, time, and costs. However, we must be clear that there is no single model valid for all organizations and companies [23]. It is essential to know the market in order to have all the information and data necessary to define the most suitable business model. Today a large amount of data available is lacking the right information useful for making decisions and making the system as a whole predictive. However, moving to a circular economy model is a complex process that requires the use of appropriate measurement and improvement tools. The standardization processes launched for some years by the UNI and ISO commissions (UNI/CT 057 Commission and ISO/TC 323—Circular economy) provide a valid contribution in starting to speak the same common language. It is clear that methods and tools are needed to define the product and manage its evolution from the sustainability perspective. In this regard, it is essential to monitor business processes by sharing information between the internal functions with all the stakeholders (designers, suppliers, distributors, customers) [24]. Thus, quantifying sustainability in the perspective of product life cycle represent a key factor as shown in **Figure 4**.

**Figure 4.** *Global challenges in terms of enabling factors and the value chain.*
